Method of transmitting data block in wireless communication system

Abstract

A method of transmitting a data block in a wireless communication system includes generating a data block having a variable size in an upper layer, transmitting a radio resource request message to a base station according to the size of the data block in a medium access control (MAC) layer and transmitting the data block by using a radio resource allocated by using the radio resource request message. For a packet service such as VoIP in which a delay time is important, QoS can be improved by decreasing the delay time of packet transmission and by decreasing a packet discard ratio.

1. A method of transmitting a data block in a wireless communication system, the method comprising:
 generating, at a packet data convergence protocol (PDCP) layer, a data block including a packet type indicator that indicates a type of the data block; 
 triggering, at a medium access control (MAC) layer, a radio resource request message according to the packet type indicator; 
 transmitting, at the MAC layer, the radio resource request message to a base station; and 
 transmitting the data block through a radio resource allocated by the radio resource request message, 
 wherein the type of the data block is a compressed header (CH) real-time transport protocol (RTP) packet, a full header (FH) RTP packet, an RTP control protocol (RTCP) packet or a session initiation protocol (SIP)/session description protocol (SDP) packet. 
 
     
     
       2. The method of  claim 1 , wherein the radio resource request message is triggered when the type of the data block is the FH RTP packet or the RTCP packet. 
     
     
       3. The method of  claim 1 , further comprising:
 transmitting the data block including the packet type indicator from the PDCP layer to a radio link control (RLC) layer; and 
 transmitting a second data block including a second packet type indicator from the RLC layer to the MAC layer, the second packet type indicator corresponding to the packet type indicator. 
 
     
     
       4. The method of  claim 3 , wherein:
 the second packet type indicator is set to 0 if the packet type indicator indicates that the type of the data block is the CH RTP packet; and 
 the second packet type indicator is set to 1 if the packet type indicator indicates that the type of the data block is the FH RTP packet, the RTCP packet or the SIP/SDP packet. 
 
     
     
       5. The method of  claim 4 , wherein the radio resource request message is triggered when the second packet type indicator is set to 1. 
     
     
       6. The method of  claim 1 , wherein information regarding the packet type indicator is predetermined by the base station.